CN208173703U - A kind of surface modification device of positive electrode - Google Patents
A kind of surface modification device of positive electrode Download PDFInfo
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- CN208173703U CN208173703U CN201820390200.6U CN201820390200U CN208173703U CN 208173703 U CN208173703 U CN 208173703U CN 201820390200 U CN201820390200 U CN 201820390200U CN 208173703 U CN208173703 U CN 208173703U
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- positive electrode
- surface modification
- modification device
- modified material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a kind of surface modification device of positive electrode, which includes fluidizing cavity and feeding mechanism, fluidization mechanism and discharging mechanism on fluidisation cavity.Feeding mechanism is used to that positive electrode and modified material to be added in the preparation facilities；Fluidization mechanism is for dispersing positive electrode and atomization modified material, so that modified material is coated on positive electrode；Discharging mechanism out of described preparation facilities for exporting the positive electrode being modified.The surface modification device structure of positive electrode provided by the utility model is simple, rationally distributed and easy to operate, and stable clad can be prepared using the reforming apparatus, and the specific capacity of battery is improved while not damaging the chemical property of battery.
Description
Technical field
The utility model relates to field of lithium ion battery more particularly to a kind of surfaces of the positive electrode of lithium ion battery
Reforming apparatus.
Background technique
Lithium ion battery relies on the advantages that its high-energy density and long circulation life to be widely used in multiple fields,
Such as field of energy source power.Electric car and energy-accumulating power station in field of energy source power is very big to the use scale of construction of lithium ion battery,
With the rapid extension of electric car and energy-accumulating power station, to the performance of the following lithium ion battery, more stringent requirements are proposed, can
It is attributed to：High-energy density, high power characteristic, high safety performance, low cost and low (nothing) pollution.The performance of this " three high two is low "
It is substantially dependent on the chemical property of positive and negative pole material in battery.By taking nickelic positive electrode as an example, nickelic system's positive electrode
Actual specific capacity is well below its theoretical specific capacity.Charge cutoff voltage by improving battery helps to improve the specific volume of battery
Amount, but it is only limitted to the increase rate of a lesser charge cutoff voltage.If further increasing charge cutoff voltage to obtain
Higher reversible specific capacity then will lead to a series of the problem of seriously affecting battery performance, such as electrolyte decomposition, positive and negative
Side reaction etc. occurs for pole material surface.
As it can be seen that at least having the following defects in the prior art：Height can only be improved by a small margin by improving charge cutoff voltage
The specific capacity of nickel system positive electrode, resulting actual specific capacity is still well below theoretical specific capacity after raising.
Therefore, it is necessary to provide a kind of technological means to solve drawbacks described above.
Summary of the invention
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of positive electrode of lithium ion battery
Surface modification device to solve the problems, such as the actual specific capacity of nickelic system's positive electrode well below theoretical specific capacity.
The utility model provides a kind of surface modification device of positive electrode, which is used for modified material
It is coated on the surface of positive electrode, including：
Fluidize cavity；
Feeding mechanism is set on fluidisation cavity, for positive electrode and modified material to be added in surface modification device；
Fluidization mechanism is set on fluidisation cavity, for dispersing positive electrode and atomization modified material, so that modified material packet
It is overlying on positive electrode；
Discharging mechanism is set on fluidisation cavity, for exporting the positive electrode being modified out of surface modification device.
Preferably, fluidization mechanism includes inlet section, and inlet section includes a blower, for toward importing air-flow in fluidizing chamber body with
Disperse positive electrode.
Preferably, inlet section further includes a heating component, has imported the intracorporal air-flow of fluidizing chamber so that anode for heating
Material and modified material heating.
Preferably, fluidization mechanism further includes outlet section, and outlet section includes a cyclone separator, for having changed in separation bubble
The positive electrode of property.
Preferably, fluidisation cavity is a cylinder.
Preferably, inlet section and outlet section are set on the central axis of cylinder, and feeding mechanism and discharging mechanism are set to cylinder
Body diagonal on.
Preferably, feeding mechanism includes the positive electrode input unit on cylinder side and is vertical at body end surface
The quantity of modified material input unit, positive electrode input unit and modified material input unit is respectively more than one.
Preferably, what modified material input unit was parallel to each other be arranged in pairs and quantity is no less than two.
Preferably, modified material input unit is one toward the pipeline of end face extension where discharging mechanism and is set to pipeline one end
Spray head, the other end of pipeline is connected to cylinder.
Preferably, spray head is rotatably set on pipeline, and spray head is equipped with several apertures, and the diameter of aperture is 0.5-3.0
Millimeter.
To sum up, a kind of surface modification device of positive electrode is used to for modified material being coated on the surface of positive electrode, packet
Fluidisation cavity and feeding mechanism, fluidization mechanism and discharging mechanism on fluidisation cavity are included, feeding mechanism is used to change toward surface
Property device in positive electrode and modified material is added；Fluidization mechanism is for dispersing positive electrode and atomization modified material, so as to change
Property material is coated on positive electrode；Discharging mechanism out of surface modification device for exporting the positive electrode being modified.
Compared with prior art, the surface modification device structure of positive electrode provided by the utility model is simple, is laid out and closes
It manages and easy to operate；Modified anode material with stable clad can be prepared using above-mentioned surface modification device, passed through
Crossing modified positive electrode may be implemented the specific capacity that battery is improved while not damaging the chemical property of battery.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the surface modification device for positive electrode that one preferred embodiment of the utility model provides
Figure.
Wherein, 1, fluidisation cavity, 2, feeding mechanism, 21, positive electrode input unit, 22, modified material input unit, 221, pipe
Road, 222, spray head, 3, fluidization mechanism, 31, inlet section, 311, inlet section bracket, 312, blower, 313, heating component, 32, outlet air
Portion, 321, outlet section bracket, 322, cyclone separator, 4, discharging mechanism.
Specific embodiment
Below in conjunction with the utility model embodiment attached drawing, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole realities
Apply example.Based on the embodiments of the present invention, those skilled in the art are obtained without making creative work
The other embodiments obtained, fall within the protection scope of the utility model.
Fig. 1 show one preferred embodiment of the utility model, which provides a kind of modified dress in surface of positive electrode
It sets, which is used to for modified material being coated on the surface of positive electrode, including：
Fluidize cavity 1；
Feeding mechanism 2 is set on fluidisation cavity 1, for positive electrode and modified material to be added in surface modification device；
Fluidization mechanism 3 is set on fluidisation cavity 1, for dispersing positive electrode and atomization modified material, so that modified material
It is coated on positive electrode；
Discharging mechanism 4 is set on fluidisation cavity 1, for exporting the positive electrode being modified out of surface modification device.
Specifically, fluidisation cavity 1 can be the hollow structures such as cylinder, square body, cuboid, and preferably draw ratio is greater than 1
Hollow cylinder；Heat-resisting steel and iron parts or other alloy components, such as carbon steel sheet, galvanized steel plain sheet, stainless steel plate etc. are selected on material.
Feeding mechanism 2 and discharging mechanism 4 are respectively positioned on the side of fluidisation cavity 1, and are in the layout of " one on the other ", in order to
The gravity for facilitating operation and overcoming material itself, feeding mechanism 2 relative to discharging mechanism 4 above；In addition, in order to make to flow
Changing has enough large spaces to distinguish for the interaction of modified material and positive electrode, feeding mechanism 2 and discharging mechanism 4 in cavity 1
Set on fluidisation 1 top of cavity and fluidisation 1 bottom end of cavity.It is can be set on feeding mechanism 2 with for positive electrode and modified material
Material is first delivered to fluidizing chamber when importing above two material into the transport section and batch turning component fluidized in cavity 1
1 inside of body, then starts batch turning component, so that material enters the inner space of fluidisation cavity 1；Compared to directly introducing material into
It fluidizes in cavity 1, waste of the material outside fluidisation cavity 1 can be effectively avoided using above-mentioned feeding manner, also can guarantee material
Material can be imported smoothly.
In the present embodiment, fluidization mechanism 3 includes inlet section 31, and inlet section 31 includes a blower 312, for past fluidizing chamber
Air-flow is imported in body 1 to disperse positive electrode.
In the present embodiment, inlet section 31 further includes a heating component 313, has been imported in fluidisation cavity 1 for heating
Air-flow is so that positive electrode and modified material heating.
In the present embodiment, fluidization mechanism 3 further includes outlet section 32, and outlet section 32 includes a cyclone separator 322, is used for
The positive electrode being modified in separation bubble.
Specifically, fluidization mechanism 3 is substantially a kind of special air stream components：Inlet section 31 will be for that will fluidize outside cavity 1
Air import fluidisation cavity 1 in；Outlet section 32 is used to fluidize outside the air-flow export fluidisation cavity 1 in cavity 1.Inlet section 31
It is oppositely arranged with outlet section 32, inlet section 31 is relative to outlet section 32 in lower section.Assuming that fluidisation cavity 1 is the cylindrical body of a rule
Structure, inlet section 31 and the axis of straight line and cylindrical body where outlet section 32 do not repeat, this is primarily to prevent from not filling
Divide modified positive electrode or the positive electrode and modified material that are modified not yet that air-flow is followed directly to flow from outlet section 32
Out to fluidizing outside cavity 1, the waste of material is caused.Inlet section 31 and outlet section 32, which are relatively arranged in a staggered manner, advantageously reduces material
Loss, improve production efficiency.
The preferred air blower of blower 312 in inlet section 31, the optional centrifugal impeller of the impeller of air blower or axial wheel.
It should be noted that distinguish impeller, can be judged according to flow direction of the air-flow in impeller centrifugal impeller or
Axial wheel, but centrifugal impeller can also be made into axis outflow wind by fluidizing cavity design, for example, the stream in air-flow is set up
Then turnover on one direction is gone out by that can also become and enter the wind the direction of direction level after round fluidisation cavity water conservancy diversion
Wind, centrifugal impeller is particularly referred to as pipeline centrifugal blower at this time, from the point of view of inlet and outlet direction, the pipeline centrifugal blower and traditional
The effect of axial wheel is the same；About the blade quantity of impeller, blade quantity depends on air pressure air flow actually required, generally
For, after blade is more, and air pressure air flow is higher, but the quantity of blade increases to certain value, air pressure air flow with blade quantity change
Change is just unobvious, here it is considered that practical air pressure air flow and the needs being used cooperatively, preferred blade quantity is no more than 20.
The optional thermal resistance of heating component 313.The driving method of blower 312 and heating component 313 in the present embodiment is preferred
It is driven by electricity, blower 312 and heating component 313 together constitute a simple and easy electric heating air blower.
A kind of equipment of the cyclone separator 322 for the separation of gas-solid system or liquid-solid system, its working principle is that leaning on
Rotary motion caused by air-flow is introduced tangentially into makes that there is the solid particle of larger centrifugal inertial force or drop to get rid of to outside wall surface point
It opens.In the present embodiment, the positive electrode being modified is suspended in the air-flow of the importing of inlet section 31, using cyclone separator 322
By positive electrode, sub-argument is come out from gas, and positive electrode drops to the fluidisation of 4 position of discharging mechanism under the effect of gravity
On the end face of cavity 1, gas then flows out outside fluidisation cavity 1.
In the present embodiment, fluidisation cavity 1 is a cylinder.
In the present embodiment, inlet section 31 and outlet section 32 are set on the central axis of cylinder, feeding mechanism 2 and discharging machine
Structure 4 is set on the body diagonal of cylinder.
In the present embodiment, feeding mechanism 2 includes the positive electrode input unit 21 on cylinder side and is vertical at
The quantity of the modified material input unit 22 of body end surface, positive electrode input unit 21 and modified material input unit 22 is respectively one
More than.
In the present embodiment, what modified material input unit 21 was parallel to each other be arranged in pairs and quantity is no less than two.
Specifically, modified material input unit 22 is equivalent to a small-sized atomising mechanism.Atomization is to enter liquid injection
It in gas medium, is allowed to disperse and be fragmented into the process of little particle drop, is to be here by the abundant fragmentation of the modified material of liquid
Droplet.
In the present embodiment, modified material input unit 21 be one toward 4 place end face of discharging mechanism extend pipeline 221 and
The other end of spray head 222 set on 221 one end of pipeline, pipeline 221 is connected to cylinder.
It should be noted that the length toward the pipeline 221 of 4 place end face of discharging mechanism extension should be 1 height of fluidisation cavity
1/2-4/5.The air inlet flow of inlet section 31 is one of the key factor of length for determining pipeline 221.In practical application, anode
Material is toward the bottom movement of fluidisation cavity 1 under its own gravity, and at this moment modified material will be close to the bottom of fluidisation cavity 1
Portion；If the air-flow of inlet section 31 is enough big, the top of positive electrode toward fluidisation cavity 1 is raised, at this moment modified material is with regard to corresponding
Ground should appear in the top of fluidisation cavity 1.
In the present embodiment, spray head 222 is rotatably set on pipeline 221, and spray head 222 is equipped with several apertures, aperture
Diameter be 0.5-3.0 millimeters.
In the present embodiment, feeding mechanism 2 includes positive electrode input unit 21 on fluidisation 1 side of cavity and vertical
Modified material input unit 22 set on fluidisation 1 end face of cavity, the quantity of positive electrode input unit 21 and modified material input unit 22
Respectively more than one.
In the present embodiment, modified material input unit 22 be one toward 4 place end face of discharging mechanism extend pipeline 221 and
Spray head 222 set on 221 one end of pipeline, the other end connection fluidisation cavity 1 of pipeline 221；Modified material input unit 22 is mutually equal
It is capable to be arranged in pairs and quantity is no less than two.
In the present embodiment, spray head 222 is rotatably set on pipeline 221, and spray head 222 is equipped with several apertures, aperture
Diameter be 0.5-3.0 millimeters.
Specifically, the service performance of spray head 222 directly affects on the spray pattern of modified material, especially spray head 222
The shape and size of aperture.The lesser micro- taper hole type of the preferred diameter of aperture on spray head 222, micro- taper hole type can drive fluid to produce
Raw one-way flow, is conducive to for modified material to be atomized the drop for particle is small and is evenly distributed.It is noted that spray head 222
Revolving speed, spray distance, that is, modified material driving source is applied to pressure on modified material solution etc. and can produce to mist droplet particle size
It is raw to influence.
To sum up, a kind of surface modification device of positive electrode is used to for modified material being coated on the surface of positive electrode, packet
Fluidisation cavity 1 and feeding mechanism 2, fluidization mechanism 3 and discharging mechanism 4 on fluidisation cavity 1 are included, feeding mechanism 2 is for past
Positive electrode and modified material are added in surface modification device；Fluidization mechanism 3 is for mist dispersion positive electrode and is atomized modified material
Material, so that modified material is coated on positive electrode；The positive electrode that discharging mechanism 4 is used to be modified is out of surface modification device
Export.
Compared with prior art, the surface modification device structure of positive electrode provided by the utility model is simple, is laid out and closes
It manages and easy to operate；Modified anode material with stable clad can be prepared using above-mentioned surface modification device, passed through
Crossing modified positive electrode may be implemented the specific capacity that battery is improved while not damaging the chemical property of battery.
Above content is only to examples for clearly illustrating the present invention and explanation, affiliated those skilled in the art couple
Described specific embodiment is done various modifications or additions or is substituted using similar method, without departing from invention or
Person surmounts range defined in present claims, all should belong to the protection range of the utility model.
Claims (10)
1. a kind of surface modification device of positive electrode, for modified material to be coated on to the surface of positive electrode, feature exists
In, including：
Fluidize cavity；
Feeding mechanism is set on the fluidisation cavity, for positive electrode and modified material to be added in the reforming apparatus；
Fluidization mechanism is set on the fluidisation cavity, for dispersing positive electrode and atomization modified material, so that modified material packet
It is overlying on positive electrode；
Discharging mechanism is set on the fluidisation cavity, for exporting the positive electrode being modified out of described reforming apparatus.
2. the surface modification device of positive electrode according to claim 1, which is characterized in that the fluidization mechanism include into
Wind portion, the inlet section include a blower, for importing air-flow in the fluidizing chamber body to disperse positive electrode.
3. the surface modification device of positive electrode according to claim 2, which is characterized in that the inlet section further includes one
Heating component has imported the intracorporal air-flow of the fluidizing chamber so that positive electrode and modified material heating for heating.
4. the surface modification device of positive electrode according to claim 2, which is characterized in that the fluidization mechanism further includes
Outlet section, the outlet section include a cyclone separator, the positive electrode for being modified in separation bubble.
5. the surface modification device of positive electrode according to claim 4, which is characterized in that the fluidisation cavity is one
Body.
6. the surface modification device of positive electrode according to claim 5, which is characterized in that the inlet section and it is described go out
Wind portion is set on the central axis of the cylinder, and the feeding mechanism and the discharging mechanism are set to the body diagonal of the cylinder
On.
7. the surface modification device of positive electrode according to claim 5, which is characterized in that the feeding mechanism includes setting
In the positive electrode input unit on the cylinder side and be vertical at the modified material input unit of the body end surface, it is described just
The quantity of pole material input unit and the modified material input unit is respectively more than one.
8. the surface modification device of positive electrode according to claim 7, which is characterized in that the modified material input unit
It is parallel to each other to be arranged in pairs and quantity is no less than two.
9. the surface modification device of positive electrode according to claim 7, which is characterized in that the modified material input unit
The pipeline extended for one toward end face where the discharging mechanism and the spray head set on described pipeline one end, the pipeline it is another
End is connected to the cylinder.
10. the surface modification device of positive electrode according to claim 9, which is characterized in that the spray head is rotatably set
In on the pipeline, the spray head is equipped with several apertures, and the diameter of the aperture is 0.5-3.0 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820390200.6U CN208173703U (en) | 2018-03-21 | 2018-03-21 | A kind of surface modification device of positive electrode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820390200.6U CN208173703U (en) | 2018-03-21 | 2018-03-21 | A kind of surface modification device of positive electrode |
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| Publication Number | Publication Date |
|---|---|
| CN208173703U true CN208173703U (en) | 2018-11-30 |
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| CN201820390200.6U Active CN208173703U (en) | 2018-03-21 | 2018-03-21 | A kind of surface modification device of positive electrode |
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| CN (1) | CN208173703U (en) |
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- 2018-03-21 CN CN201820390200.6U patent/CN208173703U/en active Active
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Effective date of registration: 20220111 Address after: 2201, building 1, COFCO Chuangxin R & D center, 69 Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Chuangpus (Shenzhen) New Energy Technology Co.,Ltd. Address before: 1-3 / F, building F2, No. 1001, Zhongshan Park Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN NEW HENGYE BATTERY TECHNOLOGY Co.,Ltd. |